chr1-226377257-T-C

Position:

• chr1-226377257-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The ENST00000366794.10(PARP1):​c.1792A>G​(p.Ser598Gly) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S598N) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: PARP1 ENST00000366794.10 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.43

Genes affected

PARP1 (HGNC:270): (poly(ADP-ribose) polymerase 1) This gene encodes a chromatin-associated enzyme, poly(ADP-ribosyl)transferase, which modifies various nuclear proteins by poly(ADP-ribosyl)ation. The modification is dependent on DNA and is involved in the regulation of various important cellular processes such as differentiation, proliferation, and tumor transformation and also in the regulation of the molecular events involved in the recovery of cell from DNA damage. In addition, this enzyme may be the site of mutation in Fanconi anemia, and may participate in the pathophysiology of type I diabetes. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.12013313).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PARP1	NM_001618.4	c.1792A>G	p.Ser598Gly	missense_variant	13/23	ENST00000366794.10	NP_001609.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PARP1	ENST00000366794.10	c.1792A>G	p.Ser598Gly	missense_variant	13/23	1	NM_001618.4	ENSP00000355759	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000329 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 16, 2024

The c.1792A>G (p.S598G) alteration is located in exon 13 (coding exon 13) of the PARP1 gene. This alteration results from a A to G substitution at nucleotide position 1792, causing the serine (S) at amino acid position 598 to be replaced by a glycine (G). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.080
BayesDel_addAF	Benign	-0.27	T
BayesDel_noAF	Benign	-0.62
CADD	Benign	17
DANN	Benign	0.19
DEOGEN2	Benign	0.066	T
Eigen	Benign	-0.43
Eigen_PC	Benign	-0.16
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Uncertain	0.93	D
M_CAP	Benign	0.011	T
MetaRNN	Benign	0.12	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-0.71	N
MutationTaster	Benign	1.0	D
PrimateAI	Benign	0.48	T
PROVEAN	Benign	3.3	N
REVEL	Benign	0.10
Sift	Benign	1.0	T
Sift4G	Benign	1.0	T
Polyphen		0.0010	B
Vest4		0.13
MVP		0.62
MPC		0.20
ClinPred		0.62	D
GERP RS		5.3
RBP_binding_hub_radar		0.97
RBP_regulation_power_radar		2.8
Varity_R		0.39
gMVP		0.79

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs1401384730; hg19: chr1-226564958;